人教版高中英语课件：the important events in cloning history.ppt

5/19/2009 the important events in cloning history in 1978: the first case of tube infant (试管婴儿 ) appeared. dolly and the father of dolly lanwilmut ( 伊恩.威尔 姆) in 1996, the famous sheep “dolly” was cloned successfully in 1998 a cloned ox. in 2002, the first cloned cat in the world. do you want to be cloned or not? thinking is cloning people a good thing or a bad thing? where is cloning leading us ? uobjection unucleus umoral usomatic ucommercial upay off uin favour of udonated cell ucast down 道德上的；伦理的 反对；不赞成 躯体的 原子核 支持 商业的 取得成功；偿清 沮丧；不愉快 捐赠的细胞 fast-reading : find the main idea of each paragraph para : the effect of dolly. para : cloning has two major uses. para : peoples attitude towards cloning para : the problems of dolly. para :cloning is a way of making an exact copy of another animal and plant. 1 2 3 4 5 1. the lamb is the clone of the cell from sheep because_. a. it provides the egg cell b. it gives birth to the lamb c. it provides the nucleus d. it is a female sheep careful reading 2. which of the following is not an advantage of cloning? cloning can be used for medical purposes. large quantities of food can be produced by cloning. cloning can help keep animals from becoming extinct. people can clone themselves at will. 3. the sheep that donated the somatic cell most probably lived _ years. a. 3 b. 6 c. 9 d. 12 4. what about the writers attitude toward cloning in this passage? a.the writer is against cloning. b. the writer is in favor of cloning. c. the writer does not state any personal opinion about cloning. d. the writer is in agreement with cloning. 1. the lamb is the clone of the cell from sheep because_. a. it provides the egg cell b. it gives birth to the lamb c. it provides the nucleus d. it is a female sheep 2. which of the following is not an advantage of cloning? cloning can be used for medical purposes. large quantities of food can be produced by cloning. cloning can help keep animals from becoming extinct. people can clone themselves at will. 3. the sheep that donated the somatic cell most probably lived _ years. a. 3 b. 6 c. 9 d. 12 4. what about the writers attitude toward cloning in this passage? a.the writer is against cloning. b. the writer is in favor of cloning. c. the writer does not state any personal opinion about cloning. d. the writer is in agreement with cloning. 1.cloning means making a copy of an animal or a plant. 2.gardeners can make a lot of money by cloning plants. 3.cloning animals is as complicated as cloning plants. 4. dolly the sheep was the first successful clone of a mammal. 5.natural clones happen in animals as well as in plants. f f listening 1.cloning is a way of making an _ copy of another animal or plant. 2.cloning plants is _ ; cloning animals is very _ . 3.at last the determination and patience of the scientists _ in 1996 with a _ . 4.cloning scientists were_ to find that dollys illness were more appropriate to a much older animal. 5.cloning became controversial .so some governments began to reform their legal systems and _ research into human cloning. 6.china and the uk continued to_ evidence of the abundant medical aid . complete the sentences according to the text: straightforward complicated paid off breakthrough exact cast down forbade accumulate use the following conjunction words to join the sentences: and, but, while, on one hand, on the other hand , although, however , etc 1.cloning is a way of making an exact copy of another animal or plant. 2.cloning plants is straightforward ; cloning animals is very complicated. 3.at last the determination and patience of the scientists paid off in 1996 with a breakthrough. 4.cloning scientists were cast down to find that dollys illness were more appropriate to a much older animal. 5.cloning became controversial .so some governments began to reform their legal systems and forbade resear